@article{JMPA_1943_9_22__85_0,
     author = {Costa de Beauregard, Olivier},
     title = {Contribution \`a l'\'etude de la th\'eorie de l'\'electron de {Dirac}},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {85--176},
     publisher = {Gauthier-Villars},
     volume = {9e s{\'e}rie, 22},
     year = {1943},
     zbl = {0063.09000},
     mrnumber = {17212},
     language = {fr},
     url = {http://archive.numdam.org/item/JMPA_1943_9_22__85_0/}
}